Table 1.

(a) Number of incidents of daily average pollutants exceeding the NAAQS limit during the pre-lockdown (PL_1–3), lockdown (LD_1–4) and unlock (UL_1–2) periods in Maharashtra from 1^st January to 3^rd July. (b) Percentage change in average pollutants and meterological parameters during the LD_1-4 and UL_1-2 phases with respect to the immediate pre-lockdown period (PL₃)

(a) No. of incidents exceeding the NAAQS limit										(b) % change w.r.t immediate pre-lockdown (PL3)
Parameters	PL1	PL2	PL3	LD1	LD2	LD3	LD4	UL1	UL2	Parameters	LD1	LD2	LD3	LD4	UL1	UL2
PM10	26	29	15	0	0	0	0	0	0	PM10	− 40.3	− 50.8	− 45.9	− 48.3	− 67.2	− 80.2
PM2.5	20	19	1	0	0	0	0	0	0	PM2.5	− 21.6	− 40.5	− 39.5	− 46.5	− 64.1	− 78.3
CO	0	0	0	0	0	0	0	0	0	CO	− 28.2	− 38.6	− 46.7	− 54.7	− 45.3	− 34.7
NH3	0	0	0	0	0	0	0	0	0	NH3	− 18.6	− 23.0	− 36.8	− 37.0	− 15.6	− 23.3
NO	0	0	0	0	0	0	0	0	0	NO	− 63.2	− 55.4	− 29.9	− 47.6	− 44.4	− 17.5
NO2	0	0	0	0	0	0	0	0	0	NO2	− 56.4	− 64.6	− 59.3	− 59.1	− 53.8	− 68.4
NOx	0	0	0	0	0	0	0	0	0	NOx	− 61.0	− 62.4	− 53.0	− 57.9	− 49.5	− 41.0
Ozone	0	0	0	0	0	0	0	0	0	Ozone	7.4	− 5.0	− 17.3	− 18.8	− 41.4	− 63.4
SO2	0	0	0	0	0	0	0	0	0	SO2	− 19.9	− 31.9	9.3	− 20.9	− 42.6	− 22.5
Benzene	23	21	8	0	2	0	0	0	0	Benzene	− 36.7	− 33.6	− 62.0	− 59.4	− 58.3	− 78.2
O-Xylene	ND	ND	ND	ND	ND	ND	ND	ND	ND	O-Xylene	− 68.1	− 69.8	− 65.6	− 80.6	− 82.7	− 79.2
Toluene	ND	ND	ND	ND	ND	ND	ND	ND	ND	Toluene	− 75.6	− 77.8	− 81.8	− 5.9	− 50.3	− 30.0
WS	ND	ND	ND	ND	ND	ND	ND	ND	ND	WS	120.7	122.3	− 8.1	− 2.3	− 13.0	− 9.5
AT	ND	ND	ND	ND	ND	ND	ND	ND	ND	AT	9.6	15.6	15.9	17.4	7.5	3.7
Temp	ND	ND	ND	ND	ND	ND	ND	ND	ND	Temp	6.9	12.1	16.3	21.8	12.0	11.5
RH	ND	ND	ND	ND	ND	ND	ND	ND	ND	RH	78.1	4.8	6.2	7.1	33.5	40.3

ND no data; AT: atmospheric temperature; RH: relative humidity; Temp: temperature; WS: wind speed